Cook ground beef and onion in large skillet, on medium-high heat until beef is cooked, stirring occasionally.

Drain fat.

Add oregano, cinnamon and garlic powder. Mix well.

Stir in broth, tomatoes, and tomato paste.

Bring to a boil.

Stir in pasta.

Reduce heat to medium; cover and cook 10 minutes or until pasta is nearly tender.

Stir in spinach and 1/2 cup feta cheese. Cover.

Cook 5 minutes longer.

Sprinkle with remaining feta cheese. Cover.

Let stand 5 minutes.